I would sign him, especially if that is a position you need and use regularly in your formation.

Last year, I signed a Ml for 26 tokens, and since I signed him he has go up 10 ratings (28-38) in about 1 season. Progression level was rapid, he still gets 2 cones per game he plays at 19yo.

Granted, for an extra 24 tokens I could have got a scout, but I wanted to see what he was like (and my other left mid was awful) plus I couldn't afford a scout at the time!